患慢性消耗性疾病时，最早发生萎缩的组织是A．骨骼肌 B．脂肪组织 C．心肌 D．肝实

引起意识和感觉分离的麻醉药是（）。

A.硫喷妥钠

B.氯胺酮

C.依托咪酯

D.恩氟烷

E.氧化亚氮

---Jenny looks hot and dry.

----So ___  you if you had a high fever.

A．will

B．do

C．are

D．would

Which of the following statements about the payback period is FALSE（）

A. The payback period provides a rough measure of a project’ s liquidity and risk.

B. The payback period is the number of years it takes to recover the original cost of the investment.

C. The payback method considers all cash flows throughout the entire life of a project.

光伏电站实现孤岛保护的方式包括（）。

A.主动孤岛保护

B.计划孤岛保护

C.被动孤岛保护

D.非计划孤岛保护

定径机和减径机的异同点？